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Alan Donovan e2921e188a go.tools/importer: make loading/parsing concurrent. 1. ParseFiles (in util.go) parses each file in its own goroutine. 2. (*Importer).LoadPackage asynchronously prefetches the import graph by scanning the imports of each loaded package and calling LoadPackage on each one. LoadPackage is now thread-safe and idempotent: it uses a condition variable per package; the first goroutine to request a package becomes responsible for loading it and broadcasts to the others (waiting) when it becomes ready. ssadump runs 34% faster when loading the oracle. Also, refactorings: - delete SourceLoader mechanism; just expose go/build.Context directly. - CreateSourcePackage now also returns an error directly, rather than via PackageInfo.Err, since every client wants that. R=crawshaw CC=golang-dev https://golang.org/cl/13509045	2013-09-04 13:15:49 -04:00
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main.go	go.tools/importer: make loading/parsing concurrent.	2013-09-04 13:15:49 -04:00

Alan Donovan e2921e188a go.tools/importer: make loading/parsing concurrent.

1. ParseFiles (in util.go) parses each file in its own goroutine.

2. (*Importer).LoadPackage asynchronously prefetches the
   import graph by scanning the imports of each loaded package
   and calling LoadPackage on each one.

   LoadPackage is now thread-safe and idempotent: it uses a
   condition variable per package; the first goroutine to
   request a package becomes responsible for loading it and
   broadcasts to the others (waiting) when it becomes ready.

ssadump runs 34% faster when loading the oracle.

Also, refactorings:
- delete SourceLoader mechanism; just expose go/build.Context directly.
- CreateSourcePackage now also returns an error directly,
  rather than via PackageInfo.Err, since every client wants that.

R=crawshaw
CC=golang-dev
https://golang.org/cl/13509045

2013-09-04 13:15:49 -04:00

main.go

go.tools/importer: make loading/parsing concurrent.

2013-09-04 13:15:49 -04:00